Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e935ba1d5c2830…

MALICIOUS

PDF

62.7 KB Created: 2020-12-23 00:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 87c0494a92ce358854de411eab53dc4a SHA-1: 9367b4b36e02354656071aa6b84cbc9fe90a542d SHA-256: 27e935ba1d5c2830795d14d5237b67a12a686d7e3e65e568eee38c955ec804cd
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly indicate a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'price of yellow cab pizza philippines', suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/strik?utm_term=price+of+yellow+cab+pizza+philippines In PDF document text
    • https://xemibunadagom.weebly.com/uploads/1/3/4/6/134639404/7805870.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e7eab0-98bd-49cb-b3c6-32b329407a02/pixawarikewolan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47fc43b3-47dd-45b5-aeca-2c792fcf9982/lijasomage.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc325ec9955c744b54a24d6/t/5fc4df71f3de5e49b5fe50f2/1606737777878/39138436213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4146edb6-d913-408f-88d8-c2e90b7e932c/gokanesafowanelekelepeza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2128aaad-cc8a-4b89-b51f-b60f02101db5/64538376588.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72134242-aae7-4b1d-9f97-8ab7d3d0494c/new_holland_tc30_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc151a0e2fce462bc8ed0ee/t/5fc7fdceb87ce24ef2a86102/1606942159638/rexobonite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcde72e8-2bb5-4421-b3c5-5b96634225e9/96626531192.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9728cb9-a5e4-4b2c-994c-f0b6720b33de/wonders_of_the_world_pictures_and_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdf75ea5-b715-4e96-8150-d0eb64762f42/dozulufug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3c8c8f4-3a55-40db-8be1-23f26fb8e974/54521390414.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB76A 5488 bytes
SHA-256: 1fb5f864e9c9e446d581cd7b056ac8857d6c1a7a9410aa7532b27e9434032bdf
font_01_sfnt_off0000ca30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA30 10648 bytes
SHA-256: 4e39905e014ed450cd2c5af1bfff5ce25b94d5f794172b405d70e91a851a3270

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